Two heads are better than one: improving magnetic relaxation in the dysprosium metallocene upon dimerization by use of an exceptionally weakly-coordinating anion
Dylan Errulat, Bulat Gabidullin, Akseli Mansikkamäki, Muralee Murugesu
Abstract
Partial metathesis between two weakly-coordinating anions in the archetypical dysprosium metallocene results in the first example of [BPh4]- as a bridging ligand in 4f metals, with a unique η2,η2:η2,η2-bridge. Magnetic susceptibility and relaxation dynamics studies along with ab initio calculations reveal improved slow relaxation of the magnetization in over its mononuclear congener, resulting in an energy barrier of 490 K/340 cm-1 and waist-restricted hysteresis up to 6.5 K.
Topics & Concepts
DysprosiumMagnetic relaxationMetalloceneRelaxation (psychology)IonCrystallographyChemistryStereochemistryPolymer chemistryInorganic chemistryPolymerizationPhysicsOrganic chemistryPolymerMagnetic fieldPsychologySocial psychologyQuantum mechanicsMagnetizationMagnetism in coordination complexesLanthanide and Transition Metal ComplexesAdvanced NMR Techniques and Applications